儒雅凤 2010/05/23
cas:128-44-9 [img]https://ng1.17img.cn/bbsfiles/images/2010/05/201005231433_220278_1620630_3.jpg[/img]
hsteel 2010/05/22
结晶水上的区别,给你附上结构式,128-44-9不带结晶水,6155-57-3带两个结晶水。 [img]https://ng1.17img.cn/bbsfiles/images/2010/05/201005220028_220063_1613520_3.jpg[/img] 128-44-9 [img]https://ng1.17img.cn/bbsfiles/images/2010/05/201005220029_220064_1613520_3.jpg[/img] 6155-57-3